<template>
  <el-form ref="deptForm" :model="form" :rules="rules" label-width="120px">
    <el-form-item label="部门名称" prop="name">
      <el-input
        v-model="form.name"
        style="width: 80%"
        placeholder="1-50个字符"
      />
    </el-form-item>
    <el-form-item label="部门编码" prop="code">
      <el-input
        v-model="form.code"
        style="width: 80%"
        placeholder="1-50个字符"
      />
    </el-form-item>
    <el-form-item label="部门负责人" prop="manager">
      <el-select v-model="form.manager" style="width: 80%" placeholder="请选择">
        <el-option
          v-for="item in list"
          :key="item.id"
          :value="item.username"
          :label="item.username"
        />
      </el-select>
    </el-form-item>
    <el-form-item label="部门介绍" prop="introduce">
      <el-input
        v-model="form.introduce"
        style="width: 80%"
        placeholder="1-300个字符"
        type="textarea"
        :rows="3"
      />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
      <el-button size="small" @click="hCancel">取消</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
import {
  addDepartments,
  editDepartments,
  getDepartmentsById,
  getEmployeesSimple
} from '@/api/departments'
export default {
  props: {
    // eslint-disable-next-line vue/require-default-prop
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean
    },
    originList: {
      type: Array,
      required: true
    }
  },
  data() {
    // code校验
    const existCodeValid = (rule, value, callback) => {
      // 验证输入的编码value在所在的部门是否存在
      let existCodeList = this.originList.map(item => item.code)
      // 确定是否为编辑状态
      if (this.isEdit) {
        // 根据id将当前编辑的部门id从所有的部门中移除
        existCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
      }
      if (existCodeList.includes(value)) {
        // 存在，校验失败
        callback(new Error(`部门编码:${value}已存在`))
      } else {
        // 不存在，放行
        callback()
      }
    }
    // name校验
    const existNameValid = (rule, value, callback) => {
      // 验证输入的名称value在所在的部门是否存在
      let existNameList = this.originList.filter(item => item.id === this.id).map(item => item.name)
      // 确定是否为编辑状态
      if (this.isEdit) {
        // 找到点击编辑的那个组的pid
        const pid = this.originList.find(item => item.id === this.id).pid
        // 找到pid相同的集合(同一组/级)
        const brothers = this.originList.filter(item => item.pid === pid)
        // 把点击编辑的那个组的pid过滤出去(自身)
        existNameList = brothers.filter(item => item.id !== this.id).map(item => item.name)
      }
      if (existNameList.includes(value)) {
        // 存在，校验失败
        callback(new Error(`部门名称:${value}已存在`))
      } else {
        // 不存在，放行
        callback()
      }
    }

    return {
      form: {
        name: '', // 部门名称
        code: '', // 部门编码
        manager: '', // 部门管理者
        introduce: '' // 部门介绍
      },
      // 校验规则对象
      rules: {
        name: [
          { required: true, message: '请输入部门的长度', trigger: 'blur' },
          { min: 1, max: 50, message: '请输入长度为1~50的部门名称', trigger: 'blur' },
          { validator: existNameValid, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '请输入部门的编码', trigger: 'blur' },
          { min: 1, max: 50, message: '请输入长度为1~50的部门编码', trigger: 'blur' },
          { validator: existCodeValid, trigger: 'blur' }
        ],
        manager: [
          { required: true, message: '请输入部门的管理者', trigger: ['blur', 'change'] }
        ],
        introduce: [
          { required: true, message: '请输入部门的介绍', trigger: 'blur' },
          { min: 1, max: 50, message: '请输入长度为1~50的部门介绍', trigger: 'blur' }
        ]
      },
      list: []
    }
  },
  // 解决数据不更新的方式3
  // 监听watch: 侦听id的变化，一旦变化，就调用loadDepartmentDetail重新获取详情数据，重新填充表单
  watch: {
    id: function(new_value, old_value) {
      console.log('new_value', new_value)
      console.log('old_value', old_value)
      this.loadDepartmentDetail
    }
    // id: {
    //  // 正对于复杂的数据类型，可以开启深度侦听或者需要页面打开就立即加载
    //  handler: function(new_value, old_value) {
    //   console.log('new_value', new_value)
    //   console.log('old_value', old_value)
    //   this.loadDepartmentDetail
    // },
    // deep:true, // 开启深度侦听
    // // 立即加载
    // immediate: true }
  },
  created() {
    // 如果是编辑部门 则调用 加载部门详情
    if (this.isEdit) {
      this.loadDepartmentDetail()
    }
    this.loadEmployeesSimple()
  },
  methods: {
    // 清空表单
    resetForm() {
      this.$refs.deptForm.resetFields()
    },
    // 加载部门详情
    async loadDepartmentDetail() {
      try {
        const res = await getDepartmentsById(this.id)
        console.log('加载部门详情', res)
        this.form = res.data.data
      } catch (error) {
        console.log(error)
      }
    },
    // 获取部门列表
    async loadEmployeesSimple() {
      try {
        const res = await getEmployeesSimple()
        console.log('获取部门列表', res)
        this.list = res.data.data
      } catch (error) {
        console.log(error)
      }
    },
    // 新增子部门
    async doadd() {
      try {
        // this.form参数缺少pid
        const res = await addDepartments({ ...this.form, pid: this.id })
        console.log('addDepartments', res)
        // 子传父 关闭弹层，重新刷新页面
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    async doEdit() {
      try {
        const res = await editDepartments(this.form)
        console.log('editDepartments', res)
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    // 确定
    hSubmit() {
      this.isEdit ? this.doEdit() : this.doadd()
    },
    // 取消
    hCancel() {
      this.$emit('close')
    }
  }
}
</script>

<style>
</style>
